Step 1

Preheat oven to 350 degrees F.

Step 2

In a large bowl, combine flour and baking soda.

Step 3

In a separate bowl mix together vegetable oil, peanut butter, applesauce and pumpkin puree. Once combined, mix in egg and mix until combined.

Step 4

Combine wet and dry ingredients and stir until combined.

Step 5

Pour mixture into an 8" round pan (a square pan can also be used) that has been greased with oil.

Step 6

Bake for approximately 25-30 minutes or until a toothpick inserted into the center comes out clean and the cake springs back when pressed lightly.

Step 7

Allow to cool on a wire rack prior to removing from pan.

Step 8

After cooling, add frosting if desired.

Step 9

Mix Greek yogurt and peanut butter until well combined. Spread over cake. If not serving immediately, store in refrigerator.